I actually found a patch to mutt that someone has done to do this with
mutt. Gets all the headers and stores them in mboxs.
http://www.ing.umu.se/~connor/programs/mutt.html
Note from page:
What does it do?
Same thing as any other news-reader, really. Except in the sense that
most readers work
I have a, possibly, unusual question. I find it convenient
to fetch news from a remote server in large batches and
store them as mbox folders, for reading with mutt. Threading
works fine, so why not? Now, the question is, can I use
mutt's reply to compose a good followup message? Obviously
I don't